Urusei Yatsura Movie 1: Only You

In Tomobiki, chaos erupts when everyone receives a wedding invitation for Ataru, and Lum is notably absent from the guest list as the bride. This unexpected turn of events traces back to a childhood game of "Shadow Tag" between Ataru and a young alien princess named Elle, who is bound by her planet's customs to marry him after losing the game. With the stakes raised, Elle's emissary arrives to finalize the wedding plans, prompting Lum to react with her trademark electric energy, but she finds herself thwarted by a protective force-field shielding Ataru from her powerful love.

In an audacious attempt to reclaim her place, Lum's friend Benten devises a plan that leads to the abduction of Ataru and the entire wedding party. As the scene is set for an unconventional wedding, the mix of adventure, romance, and comedic antics unfolds, showcasing Lum's determination and the lengths she will go to in order to win back her beloved.